Home / 13,185.61-18,196.08-7,217.26

Finding the Fourth Proportional to 13,185.61, 18,196.08 and 7,217.26

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Solution

The fourth proportional to 13,185.61, 18,196.08 and 7,217.26 is: 9,959.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.61 : 18,196.08 = 7,217.26 : x
  2. Step 2: Convert to fraction form
    13,185.61/18,196.08 = 7,217.26/x
  3. Step 3: Cross multiply
    13,185.61x = 18,196.08 × 7,217.26
  4. Step 4: Simplify right side
    13,185.61x = 131,325,840.34
  5. Step 5: Solve for x
    x = 131,325,840.34/13,185.61
  6. Step 6: Final answer
    x = 9,959.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.